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DBMS > IBM Db2 warehouse vs. PostGIS vs. Quasardb

System Properties Comparison IBM Db2 warehouse vs. PostGIS vs. Quasardb

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Editorial information provided by DB-Engines
NameIBM Db2 warehouse infoformerly named IBM dashDB  Xexclude from comparisonPostGIS  Xexclude from comparisonQuasardb  Xexclude from comparison
DescriptionCloud-based data warehousing serviceSpatial extension of PostgreSQLDistributed, high-performance timeseries database
Primary database modelRelational DBMSSpatial DBMSTime Series DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.34
Rank#166  Overall
#76  Relational DBMS
Score23.90
Rank#29  Overall
#1  Spatial DBMS
Score0.19
Rank#327  Overall
#30  Time Series DBMS
Websitewww.ibm.com/­products/­db2/­warehousepostgis.netquasar.ai
Technical documentationpostgis.net/­documentationdoc.quasar.ai/­master
DeveloperIBMquasardb
Initial release201420052009
Current release3.4.2, February 20243.14.1, January 2024
License infoCommercial or Open SourcecommercialOpen Source infoGPL v2.0commercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licenses
Cloud-based only infoOnly available as a cloud serviceyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageCC++
Server operating systemshostedBSD
Linux
OS X
Windows
Data schemeyesyesschema-free
Typing infopredefined data types such as float or dateyesyesyes infointeger and binary
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.no infoImport/export of XML data possibleyesno
Secondary indexesyesyesyes infowith tags
SQL infoSupport of SQLyesyesSQL-like query language
APIs and other access methods.NET Client API
JDBC
ODBC
OLE DB
HTTP API
Supported programming languagesJava
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
Server-side scripts infoStored proceduresPL/SQL, SQL PLuser defined functionsno
Triggersyesyesno
Partitioning methods infoMethods for storing different data on different nodesShardingyes infobased on PostgreSQLSharding infoconsistent hashing
Replication methods infoMethods for redundantly storing data on multiple nodesyesyes infobased on PostgreSQLSource-replica replication with selectable replication factor
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonowith Hadoop integration
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes infoby using LevelDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnoyes infoTransient mode
User concepts infoAccess controlfine grained access rights according to SQL-standardyes infobased on PostgreSQLCryptographically strong user authentication and audit trail

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More resources
IBM Db2 warehouse infoformerly named IBM dashDBPostGISQuasardb
DB-Engines blog posts

Spatial database management systems
6 April 2021, Matthias Gelbmann

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